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Item #: 0037
Reg. Price: $28.00
Our Price: $22.00

Description  more details

Arginine & Citrulline 500/250 - 120 Capsules
  • 500/250
  • Supports Protein Metabolism
  • Helps Maintain Muscle Tissue

Arginine and Citrulline are two amino acids that are integral to protein metabolism and utilization, as well as to the maintenance of muscle tissue.  Both are key intermediates in the urea cycle, where they participate in the detoxification of ammonia via the production of urea.  Arginine that has not been converted to urea enters general circulation where it is distributed to various tissues and metabolized for other uses such as protein synthesis.  Scientific studies have shown that supplementing Citrulline along with Arginine helps maintain nitrogen balance better than supplementation with Arginine alone.

L-citrulline goes into the kidneys where it is rapidly converted into L-arginine, making it a great choice for men looking to produce strong, hard erections. Scientific studies have proven L-citrulline supplementation increases blood levels of L-arginine more effectively than supplementation of L-arginine alone.

Taking these products together increases nitric oxide (NO) production. Increasing NO levels in blood vessels relaxes the blood vessels, allowing them to widen or dilate. This action can have a significant decrease in blood pressure.

For body builders, dilated blood vessels deliver more blood flow to tissues like muscle fibers. The two main benefits of greater blood flow to muscle fibers is better exercise energy and endurance, leading to bigger muscles pumps during workouts.

NOW Foods was founded in 1968 under the belief that good health was not a luxury available only to the wealthy. For the past forty-five years, they have made it their life's work to offer health food and nutritional supplements of the highest quality, at prices that are fair and affordable to all those who seek them.

Today, NOW Foods is one of the top-selling brands in health foods stores, an award-winning manufacturer, a respected advocate of the natural product industry, and a leader in the fields of nutritional science and methods development. And while they have grown considerably over the past four decades, one thing has never changed – their commitment to providing products and services that empower people to lead healthier lives.


Serving Size: 2 Capsules- Servings Per Container: 60

  Amount Per Serving

L-Arginine (Free-Form)   1.0 g (1,000 mg)  
L-Citrulline (Free-Form)   500 mg  
Suggested Usage: As a dietary supplement, take 2 capsules 1 to 3 times daily as needed, preferably with juice or water on an empty stomach, before exercise or at bedtime.  Consider taking this product in combination with NOW® L-Norvaline, P-5-P and AAKG.

Other Ingredients:  Gelatin (capsule), Silica, Cellulose, Stearic Acid (vegetable source) and Magnesium Stearate (vegetable source).

Contains no:  sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives.

Warning:  This supplement should be avoided by persons with glaucoma or herpes simplex unless otherwise prescribed by a physician.  Do not use if you have had a myocardial infarction or have established coronary artery disease.

PRODUCT #: 0037
UPC: 733739000378

Non-GMO   GMP   

Amino Acids Are the Building Blocks of Protein

Regardless of the sports or exercise regimen you engage in, if you’re not providing your body and muscles with a steady supply of high-quality amino acids you’ll always be a step behind.

Amino acids are ideal muscle recovery supplements and workout recovery supplements. As the building blocks of protein, amino acids are absolutely critical for achieving your bodybuilding goals as well as recovering from workouts.*

    NOW Sports is the # 1 selling brand of amino acids in health food stores. (SPINSscan Natural, 52 Week Period Ending 3/23/13)
    We use only the “L” form, or natural form, in our amino acids supplements.
    We thoroughly test every amino acid product for potency, purity and safety.
    You won’t find a higher grade of amino acid anywhere.
    NOW Sports offers a variety of forms and potencies for your needs. In addition to our wide array of single amino supplements, we also carry a number of combination formulas.
    No one comes close to our winning combination of quality, selection and value.
    NOW Sports carries all 20 common amino acids, including essential, non-essential, conditionally essential and branched-chain amino acids.

With NOW Sports premium quality amino acid supplements, you can optimize your results from every workout, and recover more quickly so you’re back in the gym sooner.*

NOW® Sports Amino Acid products are carefully screened for purity and potency and are manufactured with our industry-leading quality assurance procedures. And we always use the natural “L” form amino acids, because we believe that natural is better.

Ready to take your workouts to the next level? Let’s get started!

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. 


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